dorsal/arxiv
View SchemaReadout of GEM Detectors Using the Medipix2 CMOS Pixel Chip
| Authors | A. Bamberger, K. Desch, U. Renz, M. Titov, N. Vlasov, P. Wienemann, A. Zwerger |
|---|---|
| Categories | |
| ArXiv ID | physics/0611229 |
| URL | https://arxiv.org/abs/physics/0611229 |
| DOI | 10.1016/j.nima.2006.12.049 |
| Journal | Nucl.Instrum.Meth.A573:361-370,2007 |
Abstract
We have operated a Medipix2 CMOS readout chip, with amplifying, shaping and charge discriminating front-end electronics integrated on the pixel-level, as a highly segmented direct charge collecting anode in a three-stage gas electron multiplier (Triple-GEM) to detect the ionization from $^{55}$Fe X-rays and electrons from $^{106}$Ru. The device allows to perform moderate energy spectroscopy measurements (20 % FWHM at 5.9 keV $X$-rays) using only digital readout and two discriminator thresholds. Being a truly 2D-detector, it allows to observe individual clusters of minimum ionizing charged particles in $Ar/CO_2$ (70:30) and $He/CO_2$ (70:30) mixtures and to achieve excellent spatial resolution for position reconstruction of primary clusters down to $\sim 50 \mu m$, based on the binary centroid determination method.
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"abstract": "We have operated a Medipix2 CMOS readout chip, with amplifying, shaping and\ncharge discriminating front-end electronics integrated on the pixel-level, as a\nhighly segmented direct charge collecting anode in a three-stage gas electron\nmultiplier (Triple-GEM) to detect the ionization from $^{55}$Fe X-rays and\nelectrons from $^{106}$Ru. The device allows to perform moderate energy\nspectroscopy measurements (20 % FWHM at 5.9 keV $X$-rays) using only digital\nreadout and two discriminator thresholds. Being a truly 2D-detector, it allows\nto observe individual clusters of minimum ionizing charged particles in\n$Ar/CO_2$ (70:30) and $He/CO_2$ (70:30) mixtures and to achieve excellent\nspatial resolution for position reconstruction of primary clusters down to\n$\\sim 50 \\mu m$, based on the binary centroid determination method.",
"arxiv_id": "physics/0611229",
"authors": [
"A. Bamberger",
"K. Desch",
"U. Renz",
"M. Titov",
"N. Vlasov",
"P. Wienemann",
"A. Zwerger"
],
"categories": [
"physics.ins-det"
],
"doi": "10.1016/j.nima.2006.12.049",
"journal_ref": "Nucl.Instrum.Meth.A573:361-370,2007",
"title": "Readout of GEM Detectors Using the Medipix2 CMOS Pixel Chip",
"url": "https://arxiv.org/abs/physics/0611229"
},
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